Part A The nucleus of a 125 Xe atom (an isotope of the element xenon with mass 125 u) is 6.0 fm in diameter. It has 54 protons and charge q = +54e. What is the electric force on a proton 2.0 fm from the surface of the nucleus? Hint: Treat the spherical nucleus as a point charge. Express your answer with the appropriate units. O Value Units Submit Request Answer Part B What is the proton's acceleration? Express your answer with the appropriate units. - 0 ( ? a= Value Units Submit Request Answer Provide Feedback